Apparatus for treating rubber and other heavy plastic material



Dec, 9, 1 924.

F. H. BANBURY APPARATUS FOR TREATING RUBBER AND OTHER HEAVY PLASTICMATERIAL 2 Sheets-Sheet 1 Filed Feb. 16, 1922 Dec. 9, 1924- F. H.BANBURY APPARATUS FOR TREATING RUBBER AND OTHER HEAVY PLASTIC MATERIALFiled Feb. 16, 1922 2 Sheets-Sheet 2 E 9n k Patented 9 194 FEBNLFY H.BANBURY, F ANSONIA, CONNECTICUT, ASSIGNOR TO BIRMINGHAM IRON FOUNDRY, OFDERBY, CONNECTICUT, A CORPORATION.

APPARATUS FOR TREATING RUBBER AND OTHER HEAVY PLASTIC MATERIAL.

Application filed February 16, 1922. Serial No. 537,182.

To all whom it may concern:

Be it known that I, FERNLEY H. BAN- BURY, a subject of the King of GreatBritain, residing at Ansonia, in the county of New Haven and State ofConnecticut, have invented a new and useful Improvement in Apparatus forTreating Rubber and Other Heavy Plastic Material; and I do herebydeclare the following, when taken in connection with the accompanyingdrawings and the characters of reference marked thereon, to be a full,clear, and exact description of the same, and which said drawingsconstitute part of this application, and represent, in-

Fig. 1 a sectional view of a machine for treatlng rubber and other heavyplastic material constructed in accordance with my invention.

Fig. 2 a vertical sectional view of the same.

Fi 3 a broken sectional view, showing a doub e cylindrical casing, withthe feedopening over one side.

Fig. 4 a similar view, showing a single cylindrical casing, with thefeed-opening arranged centrally thereto.

Fig. 5 a similar view, illustrating a single cylindrical chamber, withthe feed-opening eccentric thereto.

Fig. 6 a sectional view of a modified form of door.

Fig. 7 a broken sectional View, illustrating a modified form of meansfor operating the door for closing the casing-opening.

This invention relates to improvement in apparatus for treating rubberand other heavy plastic material, and particularly to machines for thispurpose which includes a stationary casing with one or more rotors, withan opening in the top of the casing over the rotor or rotors, throughwhich material to be treated is admitted, and particularly to machinesof this type, in which the upward movement of the mass being treated isrestricted. The object of this invention is to provide a machine of theclass described with a hinged door to close the filling opening in thetop of the casing, and the invention consists in the construction ashereinafter described and particularly recited in the claims.

In carrying out my-invention, I employ broken lines in that figure.

a stationary casing 10 provided with a discharge-opening 33 having ahorizontally movable bottom door 11, which, as herein shown, is operatedby pneumatic or other suitable means. The top of the casing is formed onopposite sides with walls 12 and 13 extending upward,-and are connectedat one end by a wall 14, the inner face 15 of which is preferablycurved. Between the side walls and opposite the end wall, is hinged'aclosure in the form of a door 16, which is adapted to close the chargingopen ing 34 in thetop of the casing. The said walls 12, 13 and 14provide a fixed housing for the pivotally-mounted, plate-like closure ordoor 16. The said walls 12, 13 and 14 form a fixed, three-sided hopper,the other s1de of which is formed by a plate-like closure or door 16hinged directly to the casing aforesaid, in position to function when inits open position as a part of the hopper and when in its closedposition to close the charging-opening in the top of the casing. Thisdoor may be operated by means of links 17 and 18 operated by apiston-rod 19, carrying a piston 20 in a cylinder 21, the piston beingadapted to be operated by any suitablemeans, so that, when moved in onedirection, it will close the door, as shown in'Fig. 1, or, when-moved inthe oppositev direction, will lift the door, as shown in As the doorstarts to close, it engages with the curved face 15 of the wall 14, soas to force any material between the walls downwardinto the cylinder.The links 17 and. 18 may be so arranged-as to .stand in a straight linewhen the door is in its closed position, and hence lock the door; or aspring-latch 22 ma be provided in the wall 14 to engage wit the door 16when in its closed osition.- As shown in Figures 1 and 2 o the drawings,the casing is a double one and in each of them is a rotor 23.

Instead of operating the door by means of links, the door may beprovided with an arm 24, connected with a cable 25, by which the arm maybe moved in one direction or the other, so as to raise or close thedoor,

and instead of forming a wall 14 with a curved face, a bin edwall, 26may be employed with a spring 27, tending to force the wall 26 inward,so as to be engaged by y cylindrical casing 10, these walls may bearranged at one side of the casing, as indicated in Figure 3 of thedrawings; or the walls may be employed with a single cylindrical chamber28, as indicated in Figure 4 of the drawings; or, instead of beingarranged concentric with the casing, it may be at one side thereof, asindicated in Figure 5 of the drawings.

If desired, the door 16 may be provided with a slot 29,as indicated inFigure 3, forming a sight opening by which the corn tents of the casingmay be examined, and, if desired, this slot may be employed as afeeding-opening for the introduction of the usual powders employed inmaking rubber.

Furthermore, the closure, instead of being solid, as shown in Figure 1of the drawings, may, have a cooling chamber as shown in Figure 4, andinstead of having a fiat under-face, may have a central downwardextension 31, as shown in Figure 6, to-

stand between the rotors when two v re employed, or an extension 32 atone side when one rotor is employed, as shown in Figiure -5. lit isobvious that the length of the closure may be somewhat less than thelength of the opening in the casing, as the main purpose of the closureis tohold the material down so as to be operated upon by the rotor orrotors. I do not, therefore, wish to be understood as limiting myinvention to any particular form of casing, nor to any particular meansfor-operating a hinged door to close the top of the casing, or to meansfor holding the said door in its closed position. It is obvious that myimprovements may be applied to a variety of machines of this generaltype.

ll claim: v 1. In a machine of the class specified, the combination witha stationary casing having a charging-opening in its top and adischarge-opening in its bottom, of a rotor located in the said casing,a. pivotal closure mounted upon the said casing, in position to closethe said charging-opening, means for operating the said closure, aclosure for the said discharge-opening, and means for operating thesame.

2. In a machine of the class specified, the combination with astationary casing having a charging-opening in its top and adischarge-opening in its bottom, of a rotor located in the said casing,a three-sided hopper located upon the said casing over thecharging-opemng thereof, a pivotal closure mounted upon the said casingin position to close the said charging-opening when in its closedposition, and to complete the said three-sided hopper when in its openposition, and means for operating the said closure.

3. In a machine of the class specified, the combination with astationary casing having a charging-opening in its top and a dis.locking the said closure in its closcdposition.

4. In a machine of the class specified, the combination with astationary'casing having a charging-opening 1n its top and adischarge-opening in its bottom, of a rotor, a

three-sided hopper located upon the said casing over thecharging-opening thereof, a pivotal, plate-like closure mounted upon thecasing in positionto close thesaid charging-opening'when in its closedposition and to complete the three-sided hopper when in its openposition, and means for operating the said closure.

5. In a machine of the class specified, the combination with astationary casing having a charging-opening in its top and adischarge-opening in its bottom, of a rotor, a three-sided hopperlocated upon the said casing over the charging-opening there-oi andcomprising side walls and an end wall connecting the same, a pivotalclosure mounted upon the casing in position to close the saidcharging-opening when in its closed position and forming a part of thehopper when in its open position and co-acting with the end wall thereofin being moved into its open and closed positions; and means foroperating the said closure.

6. In a machine of the class specified, the

I combination with a casing having a charging-opening in its top, twocomplementary walls extending upwardly from the said opening, and a wallconnecting the adjacent ends of the said complementary walls and havingits inner face curved, and a hinged closure located between the saidcomplementary walls, and having its edge arranged to enact with thecurved surface of the said other wall.

7. In a machine of the class specified, the

combination with a stationary casing having a charging-opening in itstop and a discharge-opening in its bottom, of a rotor. a three-sidedhopper located'upon the said casing over the charging-opening thereof, a

closed position, and provided with an i'nspeotion-opening; and means foroperating the said closure.

8. In a machine of the class specified, the combination with astationary casing having a charging-opening in its top and adischarge-opening in its bottom, of a rotor, a three-sided hopperlocated upon the said casing over the charging-opening thereof, apivotal closure mounted upon the casing in position to form the fourthside of the hopper when in its open position and to close the saidcharging-opening when in its closed position, and formed with a downwardextension shaped for co-action with the rotor when closed; and means foroperating the said closure.

9. In amachine of the class specified, the combination with a stationarycasing having a charging-opening in its top and a discharge-opening inits bottom, of a rotor, a three-sided hopper located upon the saidcasing over the charging-opening thereof and Consisting of side wallsand an end wall connecting the same and having its inner face curved,and a pivotal closure mounted upon the casing between the said sidewalls of the hopper in position to co-act with the curved inner face ofthe end wall'thereof, the said closure forming the fourth wall of thehopper when in its open position and closing the said charging-openingwhen in itsclosed position; and means for operating the said closure. 7

10. In a machine of the class specified, the combination with astationary casing having a charging-opening in its top and adischarge-opening in its bottom, of a rotor, a three-sided hopperlocated upon the said casing over the charging-opening thereof, apivotal closure mounted upon the said casing in position to close thesaid chargingopening when in its closed osition and to complete the saidthree-side in its openposition, means for operating the said closure,and a spring-latch for positively locking the said closure in its closed1 position.

11. In a machine of the class specified, the combination with astationary casing hopper when having a charging-opening in its top and adischarge-opening in its bottom, of two rotors located in the casing, athree-sided hopper located upon the said casing overthe charging-openingthereof, a pivotal closure mounted upon the casing in position tocomplete the hopper when in its open position and to close the saidcharging-opening when in its closed position; and means for operatingthe said closure. Y

12. In a machine of the class specified, the combination with astationary casing having a charging-opening in its top and a discharge-opening in its bottom, of two rotors located in the casing, athree-sided hopper located upon the said casing over thecharging-opening thereof, a pivotal closure mounted upon the casing, inposition to complete the hopper when in its open position and to closethe said charging-opening when it is in its closed position, andprovided upon its lower face with a downward extension shaped forcoaction with the respective rotors when in its closed position; andmeans for operating the said closure.

13. In a machine of the class specified, the combination with astationary casing having a charging-opening in its top and adischarge-opening in 1ts bottom, of two rotors located in the casing, athree-sided hopper located upon-the said casing over thecharging-opening thereof, a pivotal closure mounted upon the casing inposition to complete the hopper when 0 en and to close the saidcharging-openin w enclosed, and provided with'a central y-arrangeddownward extension having concave surfaces for coaction with therespective rotors, means for operating the said closure, a closure forthe discharge-opening, and means for operating the same.

In testimony whereof, I have signed this specification in the presenceof two subscribing witnesses.

FREDERIO C. EARLE P. NIoHoLs.

